Page 426 of 570

425 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
vThe yellow ESP® warning lamp
comes on while the engine is
running.The ESP® has been switched of with the ESP®
switch or has switched off due to a
malfunction.
Risk of accident!
Adapt your speed and driving to the prevail-
ing road, weather, and traffic conditions.Switch the ESP® back on
(
page 105).
If the ESP
® cannot be switched back on:
Continue driving with added caution.
Observe additional messages in the
multifunction display that may
appear.
Have the system checked at an autho-
rized Mercedes-Benz Light Truck
Center as soon as possible.
vThe yellow ESP® warning lamp
flashes while driving.The ESP® or traction control has come into
operation because of detected traction loss
of at least one tire.When driving off, apply as little throt-
tle as possible.
While driving, ease up on the acceler-
ator.
Adapt your speed and driving to the
prevailing road and weather condi-
tions.
Do not deactivate the ESP®.
Exceptions: (
page 104)
Failure to follow these instructions
increases the risk of an accident.
Page 429 of 570

428 Practical hints
What to do if …
ProblemPossible cause/consequenceSuggested solution
HUSA only:
Combination low tire
pressure/TPMS malfunction
telltale for the TPMS illuminates
continuously.
Canada only:
Low tire pressure telltale for the
Advanced TPMS* illuminates
continuously.The TPMS (USA only) or Advanced TPMS*
(Canada only) detects a loss of pressure in at
least one tire.Carefully bring the vehicle to a
halt, avoiding abrupt steering and
braking maneuvers. Observe the
traffic situation around you.
Read and observe messages in
the multifunction display.
If the tire inflation pressure in the
respective tire(s) has (have) been
corrected, the combination low tire
pressure/TPMS malfunction telltale
goes out after few minutes driving.
HUSA only:
Combination low tire
pressure/TPMS malfunction
telltale for the TPMS flashes
60 seconds and then stays
illuminated.There is a malfunction in the TPMS.Read and observe messages in
the multifunction display.
Have the TPMS checked by an
authorized Mercedes-Benz Light
Truck Center.
After the malfunction has been
remedied the combination low tire
pressure/TPMS malfunction telltale
goes out after few minutes driving.
Page 432 of 570
431 Practical hints
What to do if …
Lamp in center console
ProblemPossible cause/consequenceSuggested solution
59The front passenger
front air bag off indicator
lamp illuminates and re-
mains illuminated with
the weight of a typical
adult or someone larger
than a small individual on
the front passenger seat.The system is malfunctioning.Have the system checked as soon as
possible by an authorized
Mercedes-Benz Light Truck Center.
Also read and observe any messages
in the multifunction display and follow
corrective steps (
page 445).
Warning!G
If the59indicator lamp
illuminates and remains illuminated with the
weight of a typical adult or someone larger
than a small individual on the front passen-
ger seat, do not have any passenger use the
front passenger seat until the system has
been repaired.
Page 433 of 570

432 Practical hints
What to do if …
ProblemPossible
cause/consequenceSuggested solution
59The front passenger
front air bag off indicator
lamp does not illuminate
and/or does not remain
illuminated with the
weight of a typical
12-month-old child in a
standard child restraint or
less on the front passen-
ger seat.The system is malfunction-
ing.Make sure there is nothing between seat cushion and
child seat and check installation of the child seat.
Make sure no objects applying supplemental weight
onto the seat are present.
Make sure no objects which apply forces to the seat
are present (e.g. objects such as books, briefcases
etc. lodged behind or around the seat, head restraints
pushing against roof etc.). The system may recognize
such forces as supplemental weight.
If the front passenger front air bag off indicator lamp
remains out, have the system checked as soon as pos-
sible by an authorized Mercedes-Benz Light Truck
Center. Do not transport a child on the front passen-
ger seat until the system has been repaired.
Also note any messages in the multifunction display
and follow corrective steps (
page 445).
Warning!G
If the59indicator lamp does
not illuminate or remains out with the
weight of a typical 12-month-old child in a
standard child restraint or less on the front
passenger seat, do not transport a child on the front passenger seat until the system
has been repaired.
Page 434 of 570

433 Practical hints
What to do if …
Vehicle status messages in the
multifunction display
Warning and malfunction messages
appear in the multifunction display located
in the instrument cluster.
Certain warning and malfunction messag-
es are accompanied by an audible signal.
Address these messages accordingly and
follow the additional instructions given in
this Operator’s Manual.
Selecting the vehicle status message
memory menu in the control system
(
page 174) displays both cleared and
uncleared messages.
High-priority messages appear in the
multifunction display in red color.Certain messages of high priority cannot
be cleared from the multifunction display
using the reset button (
page 156) or
buttonj,k,ÿ, orè on the
multifunction steering wheel.
Other messages of high priority and mes-
sages of less immediate priority can be
cleared from the multifunction display
using the reset button (
page 156) or
buttonj,k,ÿ, orè on the
multifunction steering wheel. They are
then stored in the vehicle status message
memory (
page 174). Remember that
clearing a message will only make the mes-
sage disappear. Clearing a message will
not correct the condition that caused the
message to appear.
Warning!G
All categories of messages contain
important information which should be
taken note of and, where a malfunction is
indicated, addressed as soon as possible at
an authorized Mercedes-Benz Light Truck
Center.
Failure to repair condition noted may cause
damage not covered by the Mercedes-Benz
Limited Warranty, or result in property dam-
age or personal injury.
Page 435 of 570

434 Practical hints
What to do if …
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may
appear in the multifunction display.
For your convenience the messages are
divided into two sections:
Text messages (page 435)
Symbol messages (page 451)
Warning!G
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see infor-
mation about your driving conditions, such
as speed or outside temperature, warn-
ing/indicator lamps, malfunction/warning
messages or the failure of any systems.
Driving characteristics may be impaired.
If you must continue to drive, do so with
added caution. Contact an authorized
Mercedes-Benz Light Truck Center as soon
as possible.
iSwitching on the ignition causes all
instrument cluster lamps (except high beam
headlamp indicator lamp, and turn signal indica-
tor lamps unless activated) as well as the multi-
function display to come on. Make sure the
lamps and multifunction display are in working
order before starting your journey.
Page 436 of 570

435 Practical hints
What to do if …
Text messages
Display messagePossible cause/consequencePossible solution
ABSinoperative
See Operator's ManualThe ABS has detected a malfunction
and has switched off.
The ESP
® and the BAS are also
deactivated.
The brake system is still functioning
normally but without the ABS avail-
able.
Continue driving with added caution.
Wheels may lock during hard braking,
reducing steering capability.
Have the system checked at an authorized
Mercedes-Benz Light Truck Center as soon
as possible.
Failure to follow these instructions increases
the risk of an accident.
unavailable
See Operator’s ManualThe ABS was deactivated because of
insufficient power supply. The charg-
ing voltage has fallen below 10 volts.
The brake system is still functioning
normally but without the ABS
available.When the voltage is above this value again, the
ABS is operational again and the message in
the multifunction display should disappear.
If the message in the multifunction display
does not disappear:
Have the generator (alternator) and the
battery checked.
Page 437 of 570

436 Practical hints
What to do if …
Display messagePossible cause/consequencePossible solution
ABSunavailable
See Operator’s ManualIf the yellow ESP® warning
lampv flashes while driving and
this message appears, the electron-
ic traction system has switched off
to prevent overheating of the drive
wheel brakes.As soon as the brakes have cooled off, the
electronic traction system switches on again.
The message in the multifunction display disap-
pears and the ESP
® warning lampv goes
out.
The self-diagnosis has not yet been
completed yet.The display will clear after driving a short
distance at a vehicle speed of above
12 mph (20 km/h).
Cruise
control and
SPEEDTRONIC
inoperativeThe cruise control is malfunctioning.Have cruise control checked by an
authorized Mercedes-Benz Light Truck
Center.
Cruise
control––– mphYou have attempted to set a
speed while driving below
20 mph (30 km/h).Accelerate to a speed exceeding
20 mph (30 km/h) and set the speed
(
page 266).
The ESP® is switched off.Switch on the ESP® (page 105).
The automatic transmission is set to
position P, R, or N.Set the automatic transmission to
positionD (
page 197).
The vehicle is secured with the
parking brake.Release the parking brake (page 57).